science
Grade-4-
Easy
Question
On melting at _______, rock becomes magma.
- High temperature
- Low temperature
- High wind
- Low pressure
Hint:
The formation of magma or lava takes place at high temperatures.
The correct answer is: High temperature
- The rock on the deepest of the earth's crust melts with the presence of water and carbon dioxide at high temperatures.
- The magma is in the lowest of the earth's crust and at the surface of the mantle.
- It oozes out through the cracks in the earth's crust and can reach the surface of the earth.
- The magma cools and crystallized to form igneous rock.
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